| Sioux City to Capodrise | 5,229.63 mi (8,416.27 km) |
| Sioux City to Capoterra | 5,114.26 mi (8,230.61 km) |
| Sioux City to Capriolo | 4,853.19 mi (7,810.46 km) |
| Sioux City to Capua | 5,223.74 mi (8,406.79 km) |
| Sioux City to Capurso | 5,325.53 mi (8,570.61 km) |
| Sioux City to Carate Brianza | 4,820.01 mi (7,757.06 km) |
| Sioux City to Caravaggio | 4,848.97 mi (7,803.66 km) |
| Sioux City to Carbonera | 4,935.54 mi (7,942.98 km) |
| Sioux City to Carbonia | 5,096.78 mi (8,202.48 km) |
| Sioux City to Cardito | 5,234.48 mi (8,424.08 km) |
| Sioux City to Carignano | 4,802.84 mi (7,729.42 km) |
| Sioux City to Carini | 5,328.74 mi (8,575.78 km) |
| Sioux City to Carlentini | 5,441.10 mi (8,756.60 km) |
| Sioux City to Carmagnola | 4,807.00 mi (7,736.12 km) |
| Sioux City to Carmiano | 5,401.56 mi (8,692.97 km) |
